Towards a structure-performance relationship for hydrogen storage in Ti-doped NaAlH4 nanoparticles

Abstract

Hydrogen storage properties of Ti-doped nanosized (20 nm) NaAlH4 supported on carbon nanofibers were affected by the stage at which Ti was introduced. When Ti was deposited first followed by NaAlH4, sorption properties were superior to the case where NaAlH4 was deposited first followed by NaAlH4. This was the result of both a smaller NaAlH4 particle size and the more extensive catalytic action of Ti in the former material.